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Empirical Mine Design for Western Underground Metal Mines
By Thomas M. Brady
The Spokane Research Laboratory/NIOSH and the University of British Columbia (UBC) geomechanics group are focusing on the development of safe and cost-effective underground design guidelines for weak
Jan 1, 2006
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Optimization of the Stress Control Method to Improve Productivity and Safety in Underground Coal Mining
By Shosei Serata
The Stress Control Method improves productivity and safety in underground coal mining. The method stabilizes the roofs and floors of mine openings in both shallow and deep coal beds, regardless of whe
Jan 1, 1986
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Relationship between the clay fabric of roof shales and roof collapse in mines of the Herrin cod, southern Illinois
By Theresa M. Bodus
The strength of roof shales is, in part, a function of the preferred orientation of clay minerals within them. Therefore, analysis of clay fabric under both air-dried and hydrated conditions should be
Jan 1, 1989
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Identification Of Factors Affecting Horizontal Displacement In Subsidence Process
By Yi Luo
In the study of the topographical effects on surface movement due to underground longwall mining, the factors that affect the incremental horizontal displacements are identified using 10 collected cas
Jan 1, 1996
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The Fault At The End Of The Tunnel
By S. S. Rowland
Good afternoon, ladies and gentlemen. It is a pleasure, for several reasons, to be here at this 13th International Conference on Ground Control in Mining. Of course it's always a pleasure to be a
Jan 1, 1994
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Correlation Between Unconfined Compressive And Point Load Strengths For Appalachian Rocks
By Luis E. Vallejo
The strength measured by the uniaxial compression test is a parameter that is widely used for the engineering classification of rocks. Sedimentary rocks such as shales, however, are difficult to evalu
Jan 1, 1989
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Stability analysis and characterization of ground subsidence of abandoned lead-zinc mines in northeastern Oklahoma
By M. M. Zarnan
This paper presents the results of s study involving characterization of ground subsidence of abandoned lead-zinc mines in northeastern Oklahoma. Two coordinated efforts were undertaken: (1) collectio
Jan 1, 1989
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Think Like a Roof Bolt ? Then Make It Scream ?
By Greg Smith
This paper documents the use of bench testing equipment developed to enhance the understanding of, and improve upon, common roof bolt support systems. Most roof bolt systems consist of components that
Jan 1, 2012
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Massive Pillar Collapse: a Room?and?Pillar Marble Mine Case Study
By Sandin E. Phillipson
The Mine Safety and Health Administration?s Roof Control Division responded to a massive ground failure at an underground marble mine in northern Georgia. The ground failure occurred in a benched area
Jan 1, 2012
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Comparison Of Predictions And Measurements Of Subsidence Caused By Underground Mining In Northern Appalachia
By H. J. Siriwardane
This paper presents results from three case studies involving longwall mine panels at which the measured ground movements were compared with the numerical model predictions based on the finite element
Jan 1, 1988
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Design And Hazard Assessment Of Mine Ore Passes
By M. J. Beus
This paper will describe the research approach being initiated by the Spokane Research Center to assess hazards and design criteria to prevent ground and muck falls in and around ore passes in hard-ro
Jan 1, 1996
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Tensioned Point Anchor Resin System Versus Non-Tensioned Fully Grouted Rebar - Two Case Studies
By John C. Stankus
Jennmar Corporation. in an effort to improve mine roof control, has conducted extensive study and research comparing tensioned point anchor resin systems versus the use of non-tensioned fully grouted
Jan 1, 1990
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Ropes mine crown pillar rock mechanics
By W. G. Pariseau
A crown pillar cave occurred at the Ropes Mine in December, 1987, that resulted in closure of the mine. Production was resumed soon afterwards with the formulation of a rock mechanics plan designed to
Jan 1, 1989
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Designing Free-Standing Steel Supports for Coal Mine Roof Support
By Sam Spearing
Free-standing supports are commonly used in coal mines in the USA, particularly when longwalling. A recent trend has been the development of prop supports. Prop supports have many advantages over bu
Jan 1, 2008
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Pre-mining stresses at some hard rock mines in the Canadian Shield (2c76bca0-8dd2-4a44-bc9b-85524b3514cf)
By B. Arjang
ABSTRACT: Ground stresses are one of the significant factors in the context of rockbursts and underground instability at some hard rock mines in Canada. Overcoring strain relief measurements using tri
Jan 1, 1989
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Strata Movement of Protective Seam Mining with Large Interburden ?? A Case Study
By Changsheng Song
With increasing depth of coal mining in China, the number of coal and gas outbursts has been increasing for years. By means of destressing the protective seam, the gas in the protected seam is drained
Jan 1, 2008
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Geostatistical Methods For Hazard Assessment And Site Characterization In Mining
By Jennifer Riefenberg
Ground control hazards, coal quality, ore reserve estimation, and pollution modeling seem unrelated topics from most mining perspectives. However, geostatistical methods can be used to characterize ea
Jan 1, 1996
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Truss Systems For Longwall Tailgate Support - Update
By John C. Stankus
At the 13th Conference on Ground Control in Mining, a paper was presented detailing a successful test in which a new truss system was utilized, in lieu of wood cribs, for tailgate support in the Pitts
Jan 1, 1995
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Multiple Seam Highwall Mining In Appalachia (428a0473-c28a-4ef9-81d1-1ed7e6911c69)
By David Newman
Multiple seam underground coal mining is ubiquitous in Appalachia. Many coal properties have from two to ten or more economically mineable coal seams. Because of the ability to penetrate 600-feet to
Jan 1, 2009
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Three-dimensional FEM analysis to sale field measurements from deep mine accessways
By M. J. Beus
A shaft is truly the "lifelinen of an underground mine. Damage to the shaft lining and guides as a result of ground movement can result in serious loss of production and extensive and continual repair
Jan 1, 1989